EP3612320B1 - Druckreinigungsvorrichtung, verfahren zum betreiben einer druckreinigungsvorrichtung und verfahren zum erkennen eines schlauchvorsatzes - Google Patents

Druckreinigungsvorrichtung, verfahren zum betreiben einer druckreinigungsvorrichtung und verfahren zum erkennen eines schlauchvorsatzes Download PDF

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Publication number
EP3612320B1
EP3612320B1 EP18717909.8A EP18717909A EP3612320B1 EP 3612320 B1 EP3612320 B1 EP 3612320B1 EP 18717909 A EP18717909 A EP 18717909A EP 3612320 B1 EP3612320 B1 EP 3612320B1
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EP
European Patent Office
Prior art keywords
pressure
operating
cleaning device
operating pressure
control device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18717909.8A
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German (de)
English (en)
French (fr)
Other versions
EP3612320A1 (de
Inventor
Tibor Levente Ruttkay
Alex Harrison
Miklos Zoldi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
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Publication of EP3612320A1 publication Critical patent/EP3612320A1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
    • B05B12/087—Flow or presssure regulators, i.e. non-electric unitary devices comprising a sensing element, e.g. a piston or a membrane, and a controlling element, e.g. a valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • B08B3/028—Spray guns
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/16—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets
    • B05B1/1627—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets with a selecting mechanism comprising a gate valve, a sliding valve or a cock
    • B05B1/1636—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets with a selecting mechanism comprising a gate valve, a sliding valve or a cock by relative rotative movement of the valve elements
    • B05B1/1645—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets with a selecting mechanism comprising a gate valve, a sliding valve or a cock by relative rotative movement of the valve elements the outlets being rotated during selection
    • B05B1/1654—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets with a selecting mechanism comprising a gate valve, a sliding valve or a cock by relative rotative movement of the valve elements the outlets being rotated during selection about an axis parallel to the liquid passage in the stationary valve element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/16—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets
    • B05B1/169—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets having three or more selectively effective outlets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/0223—Electric motor pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/0282—Safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/09—Flow through the pump

Definitions

  • the present invention relates to a pressure cleaning device with a pressure generating unit for pressurizing a fluid and for dispensing a pressurized fluid via a hose attachment, preferably via a hand gun or a cleaning syringe, the pressure cleaning device being operable in at least two different operating modes.
  • Such a pressure cleaning device with a pressure generating unit for pressurizing a fluid and for dispensing a pressurized fluid via a hose attachment is known from the prior art.
  • the hose attachment is designed as a hand gun or cleaning syringe.
  • the pressure cleaning device can be operated in at least two different operating modes, with each operating mode being assigned a fixed operating pressure. For example, see the pamphlets WO 2016/066209 A1 , U.S. 2009/223541 , DE 30 01 571 A1 , DE 43 23 832 A1 and DE 10 2006 009855 A1 referred.
  • the present invention provides a new pressure cleaning device having the features of claim 1.
  • the invention thus makes it possible to provide a pressure cleaning device in which efficient and safer operation can be enabled by controlling the pressure generating unit on the basis of the respectively set operating mode depending on a currently determined operating pressure and/or a currently determined flow rate.
  • An energy-saving pressure cleaning device can thus be provided in a simple and uncomplicated manner.
  • the pressure cleaning device is preferably designed in the manner of a low-pressure cleaning device, with the pressure generation unit being designed to generate a maximum operating pressure of less than 25 bar, preferably less than 20 bar and particularly preferably less than 15 bar, and with the low-pressure cleaning device being operable without a nozzle spacing element, in particular without a lance.
  • a pressure cleaning device can be provided in a simple manner, which can be used for an application for cleaning light to medium-heavy soiling.
  • the pressure-generating unit preferably has a motor, in particular an electric motor, and each of the at least two different operating modes is assigned a separate maximum operating pressure and/or the respective operating mode is assigned a predefined speed of the motor, with the control device being designed to shut off the motor Taxes. Control of the pressure cleaning device can thus be enabled safely and reliably.
  • a separate maximum operating pressure is preferably assigned to each of the at least two different operating modes, and the control device is designed to prevent the respective separate maximum operating pressure from being exceeded. It is thus possible to prevent a maximum operating pressure from being exceeded in a simple and uncomplicated manner, so that safe operation of the pressure cleaning device is made possible.
  • each of the at least two different operating modes is assigned a separate minimum operating pressure or a switch-on pressure
  • the control device is designed to prevent the respective separate minimum operating pressure from being undershot and/or to activate at least the motor if the switch-on pressure is not reached.
  • the control device preferably prevents the respective separate maximum operating pressure from being exceeded by deactivating the pressure generating unit and/or activates at least the pressure generating unit if the respective separate minimum operating pressure and/or the switch-on pressure is not reached. Safe and reliable operation of the pressure cleaning device can thus be made possible.
  • control device is designed to deactivate the pressure-generating unit when a predetermined dry-running operating pressure occurs, which signals an empty storage tank. Dry running of the pressure cleaning device, in the course of which the pressure cleaning device can be damaged or even destroyed, can thus be at least essentially prevented in a simple and reliable manner.
  • control device is designed to set a maximum and/or minimum operating pressure as a function of a current operating pressure and/or an operating pressure curve and/or a current flow rate or flow rate curve. Efficient and energy-saving operation of the pressure cleaning device can thus be made possible.
  • the maximum and/or minimum operating pressure is preferably a predetermined percentage or a predetermined absolute pressure higher or lower than the currently determined operating pressure. Maximum and/or minimum operating pressures adapted to the currently determined operating pressure can thus be made possible in a simple and uncomplicated manner, as a result of which the energy consumption of the pressure cleaning device can be at least approximately reduced.
  • the control device is preferably designed to recognize a hose attachment used or a fluid jet type used as a function of a current operating pressure and/or an operating pressure curve and/or a current flow rate or flow rate curve. In this way, an automatic setting of the pressure cleaning device can be made possible in a simple manner, as a result of which an application-specific setting and efficient use of the pressure cleaning device is also made possible for an inexperienced user.
  • the control device is preferably designed to store or output at least one item of information about the hose attachment currently being used or the jet type being used, in particular to output it to a mobile terminal device or to another human-machine interface. Information ascertained by the control device can thus be communicated to a user of the pressure cleaning device in a simple and uncomplicated manner.
  • the control device is preferably designed to derive a status of the pressure cleaning device or to monitor the status of the pressure cleaning device depending on a current operating pressure and/or an operating pressure curve and/or a current flow rate or flow rate curve.
  • a safe and at least essentially risk-free operation of the pressure cleaning device can be made possible.
  • the pressure generation unit preferably has a pump, with the preferred electrical pressure sensor being arranged at a pump outlet of the pump. This enables an exact and precise determination of the operating pressure.
  • a battery pack is provided at least for the power supply of the pressure generation unit, the preferably electrical pressure sensor and the control device. In this way, a power supply for these components can be made possible in a simple and uncomplicated manner when the pressure cleaning device is used in a mobile manner.
  • the control device is preferably designed to switch off the pressure cleaning device after a predetermined period of time without actuation of the hose attachment or without falling below the switch-on pressure. A safe and reliable shutdown of the pressure cleaning device can thus be made possible.
  • the present invention provides a method for operating a pressure cleaning device with the features of claim 14.
  • the invention thus makes it possible to provide a method for operating a pressure cleaning device, in which efficient operation of the pressure cleaning device can be enabled by the control based on the operating mode set in each case as a function of a currently determined operating pressure and/or a currently determined flow rate.
  • An energy-saving method for operating the pressure cleaning device can thus be provided in a simple and uncomplicated manner.
  • a method for detecting a hose attachment, in particular a fluid jet type of a hose attachment of a pressure cleaning device, in particular a pressure cleaning device described above, with a pressure generation unit for pressurizing a fluid is proposed.
  • a current operating pressure and/or a flow rate sensor is used in each case via a preferably electrical pressure sensor current flow rate is determined and a control device uses the determined operating pressure and/or the determined flow rate to create an operating pressure curve and/or flow rate curve and correlates this to identify the hose attachment or the type of fluid jet with stored operating pressure curves and/or flow rate curves, in particular to set an operating mode of the pressure generating unit make possible.
  • a method for detecting a hose attachment is made available, in which an automatic setting of a suitable operating mode can be made possible by determining the operating pressure and/or the flow rate.
  • a suitable operating mode can thus be set in a simple manner.
  • FIG. 1 12 shows a cleaning device 100 configured as a pressure cleaning device, for example, with a housing 110.
  • a pressure-generating unit 120 for pressurizing a fluid is preferably arranged in the housing 110.
  • the pressure cleaning device 100 is designed in the manner of a low-pressure cleaning device, with the pressure generating unit 120 being designed to generate a maximum operating pressure of less than 25 bar, preferably less than 20 bar and particularly preferably less than 15 bar.
  • the low-pressure cleaning device can preferably be operated without a nozzle spacing element, in particular without a lance.
  • the pressure cleaning device 100 can also be designed as a high-pressure cleaning device.
  • Such a preferably multifunctional pressure cleaning device 100 can be used in a wide variety of areas, in particular for light to medium cleaning tasks, e.g. for cleaning objects such as vehicles, e.g. cars, bicycles, in particular mountain bikes, and/or for cleaning toys, in particular children's toys, and /or for cleaning items of clothing, for example boots, in particular rubber boots, and/or for cleaning work equipment, in particular Garden tools such as shovels, spades, etc., and/or for cleaning domestic animals, eg horses, dogs or the like.
  • the pressure cleaning device 100 can also be used in the garden, for example for watering plants, and/or when camping, for example as a mobile shower. It is pointed out that the possible applications described are only of an exemplary nature and are not to be seen as a restriction of the invention, so the pressure cleaning device 100 can also be used in any other applications.
  • the pressure generating unit 120 has a motor, not shown.
  • the motor is preferably designed as an internal combustion engine and/or an electric motor.
  • a battery pack can be provided for mains-independent power supply and/or a cable connection can be provided for mains-dependent power supply.
  • the motor is preferably designed as an electric motor with which a battery pack is assigned.
  • the pressure cleaning device 100 preferably has at least one, illustratively two, wheels 114 for moving on any type of surface.
  • the wheels 114 are configured to allow movement in off-road terrain, such as in the garden, etc.
  • the wheels 114 allow a secure footing and thus safe operation due to the preferably stable configuration.
  • At least one handle 112 is preferably assigned to the housing 110 so that the pressure cleaning device 100 can be gripped securely.
  • the handle 112 is preferably telescopic.
  • the pressure cleaning device 100 has at least one carrying handle which is designed to carry the pressure cleaning device 100 in the manner of a bag and/or a backpack.
  • the pressure cleaning device 100 preferably has at least one fluid tank 116 .
  • the fluid tank 116 is firmly connected to the housing 110 .
  • the fluid tank 116 can be detachable from the housing 110 so that it can be removed from the housing 110 for filling and/or cleaning, for example.
  • the fluid tank 116 preferably has a capacity of 15 liters.
  • an embodiment of the fluid tank 116 with a Capacity of 15l not to be seen as a limitation of the invention.
  • the capacity of the fluid tank 116 can also be smaller or larger than 15 l.
  • the pressure cleaning device 100 can also be supplied with a corresponding fluid via an external fluid source, e.g. a lake, stream, water tap, etc.
  • an external fluid source e.g. a lake, stream, water tap, etc.
  • a connection element e.g. a connection adapter
  • a further fluid tank and/or a further connection element for a cleaning fluid e.g. a cleaning agent, can be provided.
  • the pressure cleaning device 100 preferably has an operating unit 118 which has at least one on/off operating element 119 which is designed to activate and/or deactivate or switch the pressure cleaning device 100 on and/or off.
  • the operating unit 118 can also be designed, for example, to set a selectable operating mode, an operating pressure, an engine speed and/or any other parameter, in particular a drive parameter.
  • the operating unit 118 preferably has an input unit 117, by means of which a selectable operating mode, an operating pressure, an engine speed and/or any other parameter, in particular a drive parameter, can be set.
  • This input unit 117 is preferably designed in the manner of an adjustment wheel, a keyboard and/or a touch element.
  • the operating unit 118 can also be assigned a display device that is integrated in the housing 110 .
  • the operating unit 118 can alternatively or optionally also be designed externally, in which case, for example, the pressure cleaning device 100 can be operated via a smartphone, tablet or the like.
  • the pressure cleaning device 100 can be connected to a hose attachment 150 via a hose 140 for the controllable delivery of the pressurized fluid.
  • the hose 140 is adapted to a maximum possible operating pressure of the pressure cleaning device 100 .
  • the hose 140 can preferably in the manner of a high-pressure hose for be designed as a high-pressure cleaning device and/or preferably be designed in the manner of a low-pressure hose, eg a garden hose, for a low-pressure cleaning device.
  • the hose 140 can be wound up manually on the housing 110 or can preferably be wound up using an automatic winding device.
  • the hose 140 can also be designed in the manner of a spiral hose.
  • an end of the hose 140 facing the pressure cleaning device 100 can be firmly connected to the pressure cleaning device 100 or can be detachably arranged on the pressure cleaning device 100 .
  • the hose 140 is illustratively arranged detachably on a coupling element 124 of the pressure cleaning device 100 .
  • the hose attachment 150 can be firmly connected to the hose 140 or preferably be detachably connected to the latter via a coupling part 154 .
  • the hose attachment 150 has a housing 152, a device 160 for setting at least two different fluid jet types and/or an operating element 153 for activating a fluid delivery.
  • the hose attachment 150 is preferably designed in the manner of a manual pistol, with the housing 152 being designed in the shape of a pistol.
  • the hose attachment 150 can also have a tubular housing 152 and/or be designed as a cleaning syringe. It is pointed out that such a cleaning syringe is preferably used directly on a hose 140, which is preferably designed as a garden hose. In the case of an application with a cleaning syringe, a pressure-generating device 100 for pressurizing the fluid is not absolutely necessary.
  • the device 160 is preferably designed to deliver the fluid that is preferably pressurized by the pressure-generating unit 120 .
  • the device 160 is designed for setting at least two different types of fluid jets, with the device 160 preferably having a nozzle head and/or nozzle selection head or being designed accordingly.
  • device 160 has at least one nozzle, preferably and in particular at least two different nozzles (162, 164, 168 in 2 ), for the selective delivery of at least two different fluid jet types.
  • Device 160 is preferably equipped with at least two different nozzles (162, 164, 168 in 2 ), wherein each of the at least two different nozzles (162, 164, 168 in 2 ) one of the at least two different fluid jet types is assigned.
  • the different types of fluid jets are preferably designed as fan jets, point jets and/or spherical jets.
  • other fluid jet types can also be used, such as a free-flow jet, i.e. a substantially unregulated fluid jet, which leaves the hose attachment 150 in the manner of a shower jet or a rain jet with comparatively little pressure, and/or a combined fluid jet type, which preferably consists of at least two fluid jet types can be composed, ie, for example, a spray jet radially on the outside and a point jet radially on the inside.
  • a selected type of fluid jet is preferably set by rotating, in particular twisting, the device 160 or the nozzle head.
  • a nozzle assigned to the selected type of fluid jet is attached to a fluid outlet opening (170 in 2 ) arranged, whereby a fluid impingement of the selected nozzle takes place.
  • a nozzle can also be designed to form at least two different types of fluid jets, the nozzle being designed as a baffle plate, for example, and the setting of the at least two different types of fluid jets being adjustable by setting a distance between the baffle plate and a fluid outlet.
  • Such a nozzle is preferably used in a cleaning sprayer as described above.
  • FIG 2 shows the hose attachment 150 from FIG 1 , hereinafter referred to as handgun 150 for convenience of description.
  • handgun 150 the device 160, preferably designed as a nozzle head, for adjusting different types of fluid jets.
  • a fluid outlet 170 of the handgun 150 which is preferably located in a 12 o'clock position of the nozzle head 160.
  • the fluid outlet 170 can also be arranged in any other position of the nozzle head 160 .
  • the nozzle head 160 with preferably at least two, illustratively four nozzles 162, 164, 166, 168.
  • the nozzle 162 is preferably designed to form a cone jet
  • the nozzle 164 is designed to form a spray jet
  • the nozzle 166 is designed to form a free-flow jet , ie for example a shower jet
  • the nozzle 168 is designed to form a fan jet.
  • nozzles can also be used to form other types of fluid jets.
  • the configuration of the nozzle head 160 with the illustrative four nozzles 162, 164, 166, 168 is only of an exemplary nature and is not to be seen as a limitation of the invention.
  • the nozzle head 160 can also have fewer or more than the four nozzles 162, 164, 166, 168.
  • the arrangement of the preferably four nozzles 162, 164, 166, 168 is also exemplary and should not be seen as a limitation of the invention.
  • the nozzles 162, 164, 166, 168 can also be arranged in any other order or arrangement in the circumferential direction of the nozzle head 160.
  • a desired type of fluid jet is preferably set, as described above, by rotating, in particular twisting, the nozzle head 160 relative to the manual gun 150.
  • an adjustment can also be made by any other movement, e.g. by a linear and /or radial movement of a correspondingly selected nozzle of the nozzles 162, 164, 166, 168 in front of the fluid outlet 170.
  • FIG 3 shows the pressure cleaning device 100 of FIG 1 and thereby illustrates the pressure generation unit 120, which preferably has a motor 310 and a pump 210 as well as a control device 240.
  • the motor 310 is preferably designed as an electric motor, with the pressure generation unit 120 preferably being supplied with power wirelessly via a battery pack 320 .
  • the pressure generating unit 120 can also have a mains-dependent power supply.
  • the pump 210 preferably has a pump inlet 212, via which the fluid is transported to the pump 210, and a pump outlet 214, via which the pressurized fluid leaves the pump 210.
  • the pump outlet 214 is connected to the coupling element 124 .
  • at least and preferably one measuring unit 220 is preferably arranged at pump outlet 214 at least for determining a current operating pressure of pressure-generating unit 120.
  • the measuring unit 220 is illustratively arranged at the pump outlet 214 , but can also be arranged in the hose 140 and/or in the hand gun 150 .
  • a wired connection and/or a radio connection can be established for communication with the control device 240 .
  • the at least one measuring unit 220 is preferably designed in the manner of a pressure sensor, particularly preferably in the manner of an electrical pressure sensor, and/or in the manner of a flow rate sensor.
  • the electric pressure sensor is provided for determining a current operating pressure and/or the flow rate sensor for determining a current flow rate or a current volume flow.
  • the control device 240 is designed to control the pressure generation unit 120 in particular on the basis of a set operating mode depending on a currently determined operating pressure and/or a respectively currently determined flow rate or the currently determined volume flow.
  • the measuring unit 220 is designed for the electrical measurement of the operating pressure and/or the flow rate. A pressure measurement by means of a spring-loaded pressure control valve is ruled out according to the invention. Furthermore, it is pointed out that the pressure cleaning device 100 according to the invention is designed without a bypass.
  • the pressure generation unit 120 can be operated in at least two different operating modes.
  • an operating mode is preferably set via the operating unit 118, in particular via the input unit 117 of the pressure cleaning device 100 of FIG 1 .
  • Operating unit 118 is preferably designed to enable at least two different operating modes to be set.
  • the operating modes can be in the form of preset modes to which different operating pressures are assigned, for example a soft mode with a low operating pressure, a medium mode with a medium operating pressure and/or a turbo mode with a high operating pressure.
  • the operating unit 118 can alternatively or optionally set a desired operating pressure be trained.
  • An operating pressure setting can be seen as an operating mode.
  • an alternative or optional operating mode can be provided, which can preferably be in the form of an automatic mode, in which case the operating pressure can be set automatically, preferably depending on a hose attachment 150 that is used and can be detected in each case.
  • Operating unit 118 is preferably designed to set a maximum operating pressure (Pmax in 6 ) of the pressure generating unit 120, at which the pressure generating unit 120 is deactivated, and/or a minimum operating pressure (Pmin in 6 ) of the pressure-generating unit 120, in which the pressure-generating unit (120) is activated, and/or to enable an additional adjustment of at least one controllable drive parameter of the pressure-generating unit 120.
  • Control device 240 is preferably designed to, on the basis of a respectively set maximum and/or minimum operating pressure (Pmax, Pmin in 6 ) to control printer generation unit 120, preferably on and/or off, in particular as a function of a respectively set drive parameter.
  • the at least one controllable drive parameter is preferably a speed of electric motor 310.
  • control device 240 is preferably designed to control the speed of motor 310.
  • each of the at least two different operating modes is assigned a separate maximum operating pressure (Pmax in 6 ) and/or a predetermined speed of motor 310 is assigned to the respective operating mode.
  • the control device 240 is preferably designed to control the motor 310 .
  • control device 240 is designed to detect when the respective separate maximum operating pressure (Pmax in 6 ) to prevent.
  • each of the at least two different operating modes is preferably assigned a separate minimum operating pressure (Pmin in 6 ) and/or a switch-on pressure (Pein in 10 ) assigned.
  • Control device 240 is preferably designed to detect a fall below the respective separate minimum operating pressure (Pmin in 6 ) or if the cut-in pressure is not reached (Pein in 10 ) to activate at least the motor 310.
  • the controller 240 prevents an overshoot of the respective separate maximum operating pressure (Pmax in 6 ) by deactivating the pressure generation unit 120 and/or activated when the respective separate minimum operating pressure (Pmin in 6 ) or the switch-on pressure (Pein in 10 ) at least the pressure generating unit 120.
  • control device 240 is designed to set a maximum and/or minimum operating pressure (Pmax, Pmin in 11 ) as a function of a current operating pressure and/or an operating pressure curve and/or a current flow rate or flow rate curve.
  • the maximum and/or minimum operating pressure (Pmax, Pmin) is higher or lower than the currently determined operating pressure by a predetermined percentage or predetermined absolute pressure.
  • the maximum and/or minimum operating pressure (Pmax, Pmin) is preferably 3 bar higher or lower than the currently determined operating pressure. It is pointed out that the maximum and/or minimum operating pressure (Pmax, Pmin) can also be more or less than 3 bar higher or lower than the currently determined operating pressure.
  • control device 240 is designed to recognize a hose attachment 150 used or a fluid jet type used depending on a current operating pressure and/or an operating pressure curve and/or a current flow rate or flow rate curve.
  • the control device 240 is preferably designed to store and/or output at least one item of information about the hose attachment 150 currently being used or the type of fluid jet being used.
  • An output can be made, for example, on a mobile device, e.g. a smartphone and/or a tablet, or on another human-machine interface. Such an output can output the corresponding information preferably tactilely and/or acoustically.
  • the information can also be stored and/or output for "condition monitoring".
  • the at least two different types of fluid jets are each assigned separate maximum operating pressures that are dependent on a respectively set operating mode.
  • the controller 240 is preferable designed to use the pressure curve (510 in 6 ) to recognize a current fluid jet type or nozzle position of the handgun 150.
  • control device 240 is alternatively or optionally designed to derive a state of the pressure cleaning device 100 and/or to monitor the state of the pressure cleaning device 100 as a function of a current operating pressure and/or an operating pressure curve and/or a current flow rate or flow rate curve or a volume flow curve .
  • status monitoring can include, for example, detection of a degree of calcification of the nozzle. This can preferably be detected based on a rapid drop in pressure during a closing process of the nozzle or the fluid outlet.
  • status monitoring can also include detection of a leak, e.g. because the pressure is too high or the volume flow is too low. If a degree of calcification and/or a leak is detected, a warning can be issued.
  • error messages can be compiled in a log and/or a note for maintenance, a cleaning process and/or an exchange, e.g. of a hose or the like, can be output.
  • control device 240 is configured to deactivate pressure-generating unit 120 when a predefined dry-running operating pressure occurs, which in particular signals an empty storage tank 116 and/or a kink in hose 140 and/or a fluid inlet hose.
  • control device 240 is alternatively or optionally designed to, after a specified period of time without actuation of hose attachment 150 and/or without falling below the switch-on pressure (Pein in 10 ) turn off the pressure cleaning device 100 .
  • Switching off preferably takes place after a period of 10 minutes.
  • the time period of 10 minutes is merely an example and should not be seen as a limitation of the invention. So can a shutdown also take place after a period of less than 10 minutes or more than 10 minutes.
  • FIG 4 shows the pressure cleaning device 100 of FIG 1 and 3 and illustrates a preferred structure.
  • the control device 240 which is preferably connected to the measuring unit arranged at the pump outlet 214 and embodied as an electric pressure sensor 220 and is connected to the motor 310, which is preferably embodied as an electric motor.
  • the control device 240 is connected to the power supply, which is preferably embodied as a battery pack 320 .
  • the battery pack 320 is provided at least for the power supply of the pressure generation unit 120 , the electrical pressure sensor 220 and the control device 240 .
  • the battery pack 320 is preferably designed to provide an operating voltage of 18V and preferably as a lithium-ion battery pack, with preferably at least 70 minutes of operation in soft mode, 30 minutes of operation in medium mode and/or 15 minutes of operation in turbo mode is enabled.
  • the battery pack 320 can preferably be charged in 100 minutes.
  • control device 240 is preferably connected to operating unit 118, with at least input unit 117 for setting an operating mode, a speed, an operating pressure, etc., and on/off operating element 119 being assigned to operating unit 118.
  • a display unit 332 is preferably also assigned to operating unit 118, which display unit can, for example, display a respectively set operating mode and/or a battery pack status.
  • FIG 5 shows the pressure cleaning device 100 of FIG 1 and 3 respectively. 4 with an additional safety circuit 418, which is preferably designed to control pump 210 or motor 310, if an error occurs or a faulty signal is detected, by a microcontroller 416 assigned to control device 240 in such a way that damage or destruction of pressure cleaning device 100 or endangering a corresponding user can be at least essentially ruled out.
  • the safety circuit 418 is arranged in parallel with the microcontroller 416 of the control device 240 . This allows safe operation of the pressure cleaning device 100 are made possible, so that in particular exceeding the maximum operating pressure can be safely and reliably prevented.
  • the control device 240 with its microcontroller 416 is preferably arranged on a printed circuit board.
  • FIG 6 shows a general and simplified diagram 500 of an exemplary operating pressure profile 510 of the pressure cleaning device 100 from FIG 1 and 3 until figure 5 .
  • a time t in seconds is plotted on an abscissa 502 and an operating pressure P is plotted in bar on an ordinate 504 .
  • a section 511 of the operating pressure curve 510 formed between a point in time T0 and T1 preferably illustrates an initial pressure build-up, in which the operating pressure is preferably built up from 0 to illustratively a maximum operating pressure Pmax.
  • the pressure generating unit 120 When the maximum operating pressure Pmax is reached, the pressure generating unit 120 is switched off and a set nozzle 162, 164, 168 can be opened by actuating the operating element 153 of the manual gun 150 to activate a fluid delivery.
  • the operating pressure P falls, for example, in section 512, or between the times T1 and T2, to a minimum operating pressure Pmin.
  • the pressure generating unit 120 is preferably activated so that it builds up the operating pressure to a set operating pressure P again.
  • the section 513 formed between time T2 and T3 illustrates a corresponding pressure build-up to the set operating pressure P. If the set operating pressure P is reached, it is maintained, as illustrated in section 514.
  • the respectively set nozzle 162, 164, 168 is closed or a fluid discharge is terminated, so that the operating pressure P increases due to the pressure generation unit 120 still being activated.
  • Sections 511-515 of the operating pressure curve 510 are linear, which, however, is not to be seen as a limitation of the invention. Sections 511-515 can also have any other profile, for example an exponential increase and/or decrease in the operating pressure.
  • an operating pressure P is available via the operating unit 118 of the pressure cleaning device 100 1 and 3 until figure 5 adjustable, a preferably predetermined maximum and/or minimum operating pressure Pmax, Pmin being assigned to the operating pressure P in each case. Provision is generally made to prevent the maximum operating pressure Pmax from being exceeded, with the control device 240 preferably being designed to prevent the respective separate maximum operating pressure Pmax from being exceeded. Control device 240 preferably prevents the respective separate maximum operating pressure Pmax from being exceeded by deactivating pressure-generating unit 120. If the respective separate minimum operating pressure Pmin is undershot, pressure-generating unit 120 is preferably activated.
  • the maximum and/or minimum operating pressure Pmax, Pmin is a specified percentage or specified absolute pressure higher or lower than the adjustable operating pressure P.
  • the absolute pressure is preferably 3 bar, i.e. the maximum operating pressure Pmax is preferably 3 bar higher than the set operating pressure P, and the minimum operating pressure Pmin is preferably 3 bar less than the set operating pressure P.
  • the specified percentage or specified absolute pressure can also be adjusted, for example in the event of wear and/or a leak. These values should ideally be chosen in order to save energy. However, the values should not be chosen too close to each other, otherwise there could be many readjustment intervals. Likewise, the values should not be too far apart, since this would in turn increase the required energy consumption.
  • the maximum and/or minimum operating pressure Pmax, Pmin can also be set manually via the input unit 117 of the operating unit 118 .
  • the present invention describes a method for operating the pressure cleaning device 100 with the pressure generating unit 120 for pressurizing the fluid and for dispensing a pressurized fluid via the hose attachment 150, preferably via a hand gun or a cleaning syringe.
  • the pressure cleaning device 100 can preferably be operated in at least two different operating modes.
  • a current operating pressure P in each case is determined via the preferably electric pressure sensor 220 and/or a current flow rate or volume flow V in each case is determined via a flow rate sensor.
  • the pressure cleaning device 100 is based in particular on the set operating mode (710 in 7 ) controlled by control device 240 as a function of a currently determined operating pressure and/or a currently determined flow rate.
  • an operating mode can also be set directly, with the operating mode being assigned a corresponding operating pressure, which is set automatically.
  • an operating pressure P can also be assigned a speed that can be set via the input unit 117 .
  • FIG. 7 shows an example operating mode-operating pressure table 700 of the pressure cleaning device 100 of FIG 1 and 3 until figure 5 .
  • the illustrative left column illustrates a respective operating mode 710, eg the operating modes described above with a first operating mode 1 or a soft mode, a second operating mode 2 or a medium mode and a third operating mode 3 or a turbo mode.
  • the first operating mode 1 or the soft mode has an operating pressure P of 4 bar and a maximum operating pressure Pmax of 7 bar and a minimum operating pressure Pmin of 1 bar.
  • the second operating mode 2 or the medium mode has, for example, an operating pressure P of 8 bar and a maximum operating pressure Pmax of 11 bar and a minimum operating pressure Pmin of 5 bar.
  • the third operating mode 3 or the turbo mode has, for example, an operating pressure P of 12 bar and a maximum operating pressure Pmax of 15 bar and a minimum operating pressure Pmin of 9 bar. It is pointed out that the operating pressures shown are only of an exemplary nature and are not to be seen as a limitation of the invention. The respective operating pressures can also have other values.
  • FIG. 8 shows an exemplary operating mode operating pressure table 800 of the pressure cleaning device 100 of FIG 1 and 3 until figure 5 , wherein the operating pressures P and associated volume flows V are shown as a function of a respective operating mode 710 and a respectively set fluid jet type. It is preferably the nozzle 162 of 2 , which is designed to form the cone jet, is assigned an operating pressure P of 4 bar and a volume flow V of 1.5 l/min in the first operating mode or the soft mode, in the second operating mode or medium mode, an operating pressure P of 8 bar and a volume flow V of 2.3 l/min, and in the third operating mode or turbo mode an operating pressure P of 12 bar and a volume flow V of 2.7 l/min .
  • the nozzle 162 of 2 which is designed to form the cone jet, is assigned an operating pressure P of 4 bar and a volume flow V of 1.5 l/min in the first operating mode or the soft mode, in the second operating mode or medium mode, an operating pressure P of 8 bar and a volume flow V of 2.3 l
  • the nozzle 168 of 2 which is designed to form the fan jet, are assigned the same values as the cone jet nozzle 162.
  • the nozzle 164 of 2 which is designed to form the spray jet, is preferably assigned an operating pressure P of 3 bar and a volume flow V of 2 l/min in the first operating mode or the soft mode, in the second operating mode or the medium mode an operating pressure P of 6, 5 bar and a volume flow V of 2.7 l/min and in the third operating mode or turbo mode an operating pressure P of 9.5 bar and a volume flow V of 3.5 l/min.
  • the nozzle 166 which is designed to form the free-flow jet, is preferably assigned an operating pressure P of 1 bar and a volume flow V of 2.5 l/min in the first operating mode or the soft mode, and on in the second operating mode or the medium mode operating pressure P of 2 bar and a volume flow V of 3.5 l/min and in the third operating mode or the turbo mode an operating pressure P of 3 bar and a volume flow V of 4.5 l/min.
  • the operating pressures P and volumetric flows V shown are only exemplary in character and are not to be seen as a limitation of the invention.
  • the respective operating pressures P and volume flows V can also have other values.
  • FIG 9 shows a diagram 900 with an exemplary operating pressure profile 910 of the pressure cleaning device 100 from FIG 1 and 3 until figure 5 .
  • the operating pressure profile 910 illustrates a detection of a nozzle assigned to a fluid jet type or a setting of a fluid jet type as well as an operating mode change. For example, a time t in seconds is plotted on an abscissa 902 and an operating pressure P is plotted in bar on an ordinate 904 .
  • a section 911 of the operating pressure profile 910 formed between a point in time T0 and T1 preferably illustrates an initial pressure build-up in medium mode or operating mode 2, in which the operating pressure is preferably built up from 0 to illustratively a maximum operating pressure P1max.
  • the pressure generating unit 120 is switched off.
  • Section 912 is the maximum operating pressure P1max is maintained until it drops to a minimum operating pressure P1min upon opening of the fluid outlet at time T2 according to example section 913 .
  • the pressure generating unit 120 is activated and the operating pressure P is built up in a section 914 until the operating pressure P1 is reached at a point in time T4.
  • control device 240 preferably recognizes a respectively set fluid jet type via a slope assigned to the section 914 and preferably builds up an operating pressure P1 assigned to the set fluid jet type.
  • Section 915 shows operation of the set type of fluid jet at its associated operating pressure P1.
  • the fluid outlet is closed at time T5, as a result of which the operating pressure in section 916 rises to the maximum operating pressure P1max and the control device 240 deactivates the pressure-generating unit 120 at time T6.
  • the operating pressure illustratively the maximum operating pressure P1max, is preferably maintained.
  • Section 918 formed between time T7 and T8 illustrates a pause in operation of pressure cleaning device 100.
  • the operating pressure P in section T9 increases to a maximum operating pressure P2max associated with the operating mode after the pressure generation unit 120 has been activated.
  • pressure generation unit 120 is deactivated analogously to time T2, and maximum operating pressure P2max is preferably maintained in section 920.
  • the fluid outlet is opened and the operating pressure P drops in section 921 to the minimum operating pressure P2min assigned to the operating mode.
  • the pressure generating unit 120 is activated again and builds up the associated operating pressure P2 in section 922, which is illustratively reached from the point in time T12.
  • Operation or fluid delivery occurs in section 923 until at time T13 the fluid delivery is deactivated, whereby the operating pressure P in section 924 up to the maximum operating pressure P2max increases and the control device 240 illustratively deactivates the pressure generation unit 120 at time T14.
  • FIG 10 shows a diagram 1000 with an exemplary operating pressure curve 1010 of the pressure cleaning device 100 from FIG 1 and 3 until figure 5 .
  • the operating pressure curve 1010 illustrates a detection of a nozzle change.
  • a time t in seconds is plotted on an abscissa 1002 and an operating pressure P is plotted in bar on an ordinate 1004 .
  • a section 1011 of the operating pressure curve 1010 formed between points in time T0 and T1 preferably illustrates an initial pressure build-up, in which the operating pressure is preferably built up from 0 to illustratively a maximum operating pressure P1max.
  • the pressure generating unit 120 is switched off.
  • the maximum operating pressure P1max is maintained in section 1012, and here the free-flow jet nozzle 166 from FIG 2 set.
  • the switch-on pressure Pein is reached at time T3, at least the pressure-generating unit 120 is activated.
  • the operating pressure P continues to fall in section 1014, or between times T3 and T4, to a minimum operating pressure P1min, which forms the operating pressure P1.
  • the operating pressure P1 is below the switch-on pressure Pein.
  • the free-flow jet nozzle 166 is operated. At time T5 the nozzle 166 is closed and the operating pressure P increases to an exemplary maximum operating pressure P2max at which the pressure generating unit 120 is deactivated.
  • the spray jet nozzle 164 After the spray jet nozzle 164 has been operated in a section 1019, it is closed at time T9, with the operating pressure P increasing to an associated maximum operating pressure P3max, at which in turn the pressure-generating unit 120 is deactivated.
  • section 1021 or between times T10 and T11, there is a nozzle change to the cone jet nozzle 162 from 2 or the fan jet nozzle 168 of 2 instead of.
  • the operating pressure P in section 1022 drops to an associated minimum operating pressure P3min, as a result of which the pressure-generating unit 120 is activated.
  • the operating pressure P in section 1023 increases to an associated operating pressure P3, with the set nozzle 162, 168 being operated in section 1024.
  • the fluid outlet is closed and the operating pressure P increases from the assigned maximum operating pressure P3max and the pressure generating unit 120 is deactivated again.
  • FIG. 11 shows a diagram 1100 with an exemplary operating pressure profile 1110 and an exemplary volume flow profile 1140 of the pressure cleaning device 100 from FIG 1 and 3 until figure 5 , where the volume flow V is equal to a flow rate curve.
  • the operating pressure curve 1110 illustrates a detection of a nozzle change and an adjustment of a maximum and minimum operating pressure. For example, a time t in seconds is plotted on an abscissa 1102 and an operating pressure P in bar and a volume flow V actual in l/min are plotted on an ordinate 1104 .
  • a section 1111 of the operating pressure curve 1110 formed between points in time T0 and T1 preferably illustrates an initial pressure build-up, in which the operating pressure is preferably built up from 0 to illustratively a maximum operating pressure P1 max.
  • P1 max When the maximum operating pressure P1max is reached, the pressure generating unit 120 is switched off.
  • the maximum operating pressure P1max is maintained in section 1112 and here, for example, the free-flow jet nozzle 166 from FIG 2 set.
  • the operating pressure P drops to a minimum operating pressure P1min, or a switch-on pressure Pein.
  • the switch-on pressure Pein is reached at time T3, at least the pressure-generating unit 120 is activated.
  • the control device 240 recognizes which of the nozzles 162, 164, 166, 168 of 2 is used and thus preferably automatically adjusts the maximum and minimum operating pressure Pmax, Pmin.
  • section 1115 operation of the free-flow jet nozzle 166 takes place.
  • the fluid outlet is closed and the operating pressure P increases to a new or adapted maximum operating pressure P1maxneu, at which the pressure generating unit 120 is deactivated.
  • Operation with the free-flow jet nozzle 166 takes place in section 1117 or between times T6 and T7.
  • the free-flow jet nozzle 166 or the fluid outlet opens at time T7, the operating pressure in section 1118 drops to a new or adapted minimum operating pressure P1minneu, as a result of which the pressure-generating unit 120 is activated.
  • the minimum operating pressure P1minneu is designed as the switch-on pressure Pein.
  • the operating pressure P drops further to the operating pressure P1 in section 1119 or between the times T8 and T9 due to the comparatively high volume flow V of the free-flow jet nozzle 166 .
  • section 1120 operation of the free-flow jet nozzle 166 takes place.
  • the fluid outlet is closed and the operating pressure P increases to the maximum operating pressure P1 maxneu, at which the pressure-generating unit 120 is deactivated.
  • a nozzle change then takes place in section 1122 .
  • the operating pressure P drops to the minimum operating pressure P1 minnew and the pressure-generating unit 120 is activated when the minimum operating pressure P1minnew is reached.
  • the operating pressure P increases to a new operating pressure P2, with the control device 240, as described above, recognizing the nozzle used, for example by a correlation, through the slope of section 1124 and thus determining an associated maximum and/or minimum operating pressure P2max, P2min.
  • the new nozzle is operated, illustratively and by way of example the spray jet nozzle 164 from FIG 2 or the new type of fluid jet.
  • the fluid outlet is closed at time T15 and the operating pressure P increases to a maximum operating pressure P2max assigned to the nozzle 164, at which point the pressure-generating unit 120 is deactivated.
  • the fluid outlet is opened and the operating pressure P drops in section 1128 to a minimum operating pressure P2min assigned to the nozzle 164.
  • the pressure generating unit 120 is activated again and the operating pressure P increases in section 1129 to the operating pressure P2 assigned to the nozzle 164. In this case, operation takes place in section 1130, which is deactivated at time T20, with the operating pressure P rising again.
  • a volume flow V is built up in a section 1141 when the nozzle 166 is opened or when the fluid outlet is opened at the point in time T2 up to the point in time T4 at which the operating pressure P1 is reached.
  • the volume flow V has its maximum volume flow V1 assigned to the nozzle 166.
  • section 1148 takes place, as described above, a nozzle change to the spray jet nozzle 164 from 2 instead of.
  • the volume flow V increases to a maximum volume flow V2 associated with the nozzle 164 and when the fluid outlet closes, or in section 1151, it falls back to 0, where it with deactivated pressure generating unit 120, or in section 1152, also remains.
  • the present invention describes a method for detecting the hose attachment, in particular a fluid jet type of hose attachment of the pressure cleaning device 100 from FIG 1 and 3 until figure 5 , with the pressure generating unit 120 for pressurizing a fluid.
  • the preferred electrical pressure sensor 220 determines a current operating pressure P and/or a flow rate sensor determines a current flow rate or volume flow V.
  • Control device 240 uses the determined operating pressure P and/or the determined flow rate or the determined volume flow V operating pressure curve 1110 or flow rate curve or volume flow rate curve 1140.
  • control device 240 correlates the created operating pressure curve 1110 and/or flow rate curve or volume flow rate curve 1140 with stored operating pressure curves or flow rate curves, in particular for one operating mode set the pressure generating unit.
  • control device 240 in the figures shown controls the pressure-generating unit 120 as a function of the operating pressure P, but this is not to be seen as a limitation of the invention. In this way, the control device 240 can also control the pressure-generating unit as a function of the volume flow V or a flow rate equated to the volume flow V.

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  • General Engineering & Computer Science (AREA)
  • Cleaning By Liquid Or Steam (AREA)
EP18717909.8A 2017-04-18 2018-04-12 Druckreinigungsvorrichtung, verfahren zum betreiben einer druckreinigungsvorrichtung und verfahren zum erkennen eines schlauchvorsatzes Active EP3612320B1 (de)

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DE102017206500.1A DE102017206500A1 (de) 2017-04-18 2017-04-18 Druckreinigungsvorrichtung mit einer Druckerzeugungseinheit
PCT/EP2018/059410 WO2018192836A1 (de) 2017-04-18 2018-04-12 Druckreinigungsvorrichtung, verfahren zum betreiben einer druckreinigungsvorrichtung und verfahren zum erkennen eines schlauchvorsatzes

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CN110536757A (zh) 2019-12-03
DE202018006446U1 (de) 2020-09-22
US11779947B2 (en) 2023-10-10
CN110536757B (zh) 2022-03-18
EP3612320A1 (de) 2020-02-26
US20210283636A1 (en) 2021-09-16
WO2018192836A1 (de) 2018-10-25

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